EP 1164657 A1 20011219 - Multiband antenna
Title (en)
Multiband antenna
Title (de)
Multiband-Antenne
Title (fr)
Antenne multibandes
Publication
Application
Priority
FI 20001387 A 20000612
Abstract (en)
The invention relates to a multiband antenna structure suitable for mobile stations in particular. The radiating elements of the antenna include not only a helix (210) but also the joining piece (220) that attaches the helix to the apparatus. The helix is shaped such that the distance between its conductor turns varies. The electrical length of the joining piece is increased e.g. by means of a conductive projection (226) that remains within the covering of the apparatus. By suitably dimensioning the parts, at least five of the resonances that the helix and joining piece have together and separately are arranged at useful points on the frequency scale. The structure according to the invention is despite the several bands simple and relatively low in production costs. <IMAGE> <IMAGE>
IPC 1-7
IPC 8 full level
H01Q 1/24 (2006.01); H01Q 1/36 (2006.01); H01Q 5/00 (2006.01); H01Q 5/357 (2015.01); H01Q 9/40 (2006.01); H01Q 11/08 (2006.01)
CPC (source: EP US)
H01Q 1/243 (2013.01 - EP US); H01Q 1/362 (2013.01 - EP US); H01Q 5/357 (2015.01 - EP US); H01Q 9/40 (2013.01 - EP US)
Citation (search report)
- [XY] EP 0736926 A1 19961009 - LK PRODUCTS OY [FI]
- [Y] WO 9963626 A2 19991209 - RYOU BYUNGHOON [KR], et al
- [Y] US 5892480 A 19990406 - KILLEN WILLIAM D [US]
- [A] US 5329287 A 19940712 - STRICKLAND PETER C [CA]
- [A] US 4169267 A 19790925 - WONG JIMMY L Y, et al
- [A] US 3852759 A 19741203 - FELSENHELD R, et al
Designated contracting state (EPC)
DE DK FR GB SE
DOCDB simple family (publication)
EP 1164657 A1 20011219; CN 1213511 C 20050803; CN 1336700 A 20020220; FI 113220 B 20040315; FI 20001387 A0 20000612; FI 20001387 A 20011213; US 2001050656 A1 20011213; US 6473056 B2 20021029
DOCDB simple family (application)
EP 01660108 A 20010606; CN 01121089 A 20010612; FI 20001387 A 20000612; US 87973501 A 20010611